Interest vs Suspect

When to use each in English, with meaning, register, and examples.

Interest

Top 1,000 (very common)A1noun

Suspect

Top 2,000 (common)B2verb
Most common: Interest
 InterestSuspect
Pronunciation🇬🇧 /["/ˈɪntrəst//ˈɪntrest/"]/🇺🇸 /["/ˈɪntrəst//ˈɪntrest/"]/🇬🇧 /["/səˈspekt/","/səˈspekts/","/səˈspektɪd/","/səˈspektɪŋ/"]/🇺🇸 /["/səˈspekt/","/səˈspekts/","/səˈspektɪd/","/səˈspektɪŋ/"]/
Meaninga feeling of wanting to know or learn about somethingto think someone might be guilty or bad
ExampleI have a great interest in painting and art.The detective began to suspect that the alibi was fabricated.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA1B2
Part of speechnounverb
Collocationsavid, close, considerable, have, evince, express, grow, flag, wane, for interest, out of interest, with interest, great, particular, special, be of, hold no, add, lie in, of interest, diverse, varied, wide, have, share, pursue, annual, monthly, etc., earn, receive, pay, accrue, bear, rate, payment, charge, interest on, a rate of interest, best interest, best interests, own, defend, guard, look after, lie in something, be at stake, group, against somebody’s/​something’s interest, contrary to somebody’s/​something’s interest, in somebody’s/​something’s interest, a conflict of interest, a conflict of interests, have somebody’s interests at heart, powerful, controlling, majority, have, sell, interest in, best interest, best interests, own, defend, guard, look after, lie in something, be at stake, group, against somebody’s/​something’s interest, contrary to somebody’s/​something’s interest, in somebody’s/​something’s interest, a conflict of interest, a conflict of interests, have somebody’s interests at heartstrongly, rather, rightly, begin to, have reason to, have reasons to, be widely suspected, rightly, wrongly, of, have grounds for suspecting somebody/​something, have grounds to suspect somebody/​something, have reason to suspect somebody/​something
Antonymsdisinterest, indifferencetrust, believe, assure
Common mistakesConfused with 'interesting' or 'interested', Using 'interest' as a verb incorrectly, Mixing up 'interest' with 'curiosity'Confused with 'suspected' - remember to use 'suspect' for present tense., Using 'suspect' without an object - always have something or someone you suspect., Mispronouncing it as 'suspect' like the noun form, when it is used as a verb.
Usage notesUsed in both spoken and written English, 'interest' is appropriate in casual conversations and formal contexts. Avoid using it in overly technical discussions where more specific terms might be preferred.Used when you have a feeling that someone is responsible for something negative. Not typically used for casual conversation unless referring to criminals. In formal contexts, it may require clarification.

Frequently asked questions: Interest vs Suspect

What's the difference between Interest and Suspect?

Interest: a feeling of wanting to know or learn about something Suspect: to think someone might be guilty or bad

Which is more common: Interest and Suspect?

Interest is the most common in everyday English.

Are Interest and Suspect the same CEFR level?

Interest: A1, Suspect: B2 on the CEFR scale.

Can I use Interest and Suspect interchangeably?

Not always. Interest and Suspect are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.